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Much of published research in psychology has been found irreproducible, possibly caused in part by questionable research practices. Open practices have been suggested as a way to combat these issues. This study aimed to assess the prevalence of declared intent to use open practices in Swedish human subjects research. We investigated the occurrence of declared intent to use open practices in a sample of 102 applications to regional ethical review boards (ERBs) in Sweden approved in 2013. Specifically, we investigated the prevalences of declared intent in applications to (1) publish the report with open access, (2) openly publish research materials, (3) openly publish data, and (4) preregister the study. 3% of applications stated an intention to publish open reports, and 5% included references to preregistrations. Statements of intent to publish data and/or materials openly were not found in any applications. A significant difference between types of open practices was identified; however, we observed no statistically significant differences in pairwise comparisons. One cause of low prevalences might be that researchers are disincentivized to use open practices. Future studies should use more recent ERB applications and larger samples.